Arbitrary File Upload Affecting parse-server package, versions <8.6.84>=9.0.0 <9.10.0-alpha.2
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published11 Jul 2026
- disclosed11 Jul 2026
- creditUnknown
Introduced: 11 Jul 2026
NewCVE-2026-61448 (opens in a new tab)How to fix?
Upgrade parse-server to version 8.6.84, 9.10.0-alpha.2 or higher.
Overview
parse-server is a version of the Parse backend that can be deployed to any infrastructure that can run Node.js.
Affected versions of this package are vulnerable to Arbitrary File Upload in the file upload process when a malformed Content-Type header is supplied and the file extension is not recognized by the mime package. An attacker can execute arbitrary scripts in the context of the application's origin by uploading a file with a crafted Content-Type and file body containing HTML, which is then served to other users who open the file URL. This is only exploitable if a storage adapter that persists and serves the uploaded Content-Type (such as Amazon S3, Google Cloud Storage, or Azure Blob Storage) is used.